Oscillating engine.



v N. -71 PATENTED JAN.21 190s.

87 312 J. SMITH. l

osoILLATING ENGINE.

A A W a APPLIOATION FILED MAR. 22, 1905.

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Witnesses `PATEN'rED JAN. 21. 1908.

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JESSE SMITH, OF SPOKANE, WASHINGTON.

OSCILLATING ENGINE.

Specification of Letters Patent Patented Jan. 21, 1908.

Application filed March 22, 1905. Serial No. 251.433.

To all whom it may concern:

Be it known that I, JESSE SMITH, a citizen of the United States, residing at Spokane, in the county of Spokane and State of Washington, have invented new and useful Im provements in Oscillating Engines, of which the following is a specification.

The primary object of the invention is to provide an oscillating engine with a simple form of adjustable valve gear which in conjunction with its operating or adjusting lever is designed to be the means for the complete control of the engine.

A further object is to improve the general construction of oscillating engines, whereby to bring the moving parts into a balanced. relation, and also produce compactness of structure so that this type of engine will be the more suitable for motor vehicles or for instalment where economy of space is necessar 'lllhe invention consists in certain novel features in the construction and arrange'- ments of parts, all 4as hereinafter described,

and specifically set forth in the appended claims.

In the accompanying drawings: Figure 1, is a view in side elevation of an engine constructed in accordance with the invention ,z Fig. 2, a front elevation of the same; Fig. 3, a top or plan view of the engine cylinders Fig. 4, a perspective view showing the valve gear in connection with the controlling lever and quadrant; Fig. 5, a detail view showing the link of the valve gear with its change of position indicated in dotted lines, and Fig. 6, a view in side elevation of the upper portion of the engine showing the preferred form 1n which both steam inlet valves and exhaust valves are controlled from a single operating lever. v

Referring to the drawings, 1 indicates the main engine-cylinder supported on the trunnions 2, and carrying a steam chest 3 on one side and adjacent the trunnion through which the steam enters, and a chest 4 for the control of the exhaust steam, located on the opposite side of the cylinder and adjacent the trunnion forming the outlet for the exhaust steam, thus counter balancing one chest against the other in the vertical arrangement of the engine as shown. Each chest is provided with the usual upper and lower valve ports through which steam is taken into or ex elled from the cylinder and the usual slide or piston for each is carried by the valve normal position shown.

,without obstructing the same.

rods 5 and 6 respectively. In addition to the counter-balancing .secured by the two steam chests provision is made by the exhaust chest 4 to allow the water of condensation or Wet steam to pass from the engine-cylinder and thereb y prevent water or wire cutting within the steam chest and cylinder.

The vreference numeral 7 g designates the piston rod, 8 the fly wheel driven thereby, and 9 the engine shaft on which said wheel is mounted, the said shaft being. mounted in a bearing formed in one of the side frames of the supporting structure.

The supporting structure comprises two vertical side frames 10 and ll, each of which is provided at its base with an inwardly projecting portion 12 having opposing flanges 13, which are secured together by means of bolts. A cross-frame 14 is secured to .the upper ends of the side frames, so that when all parts of the supporting structure are assembled they form combined a comparatively light and durable yoke in which the cylinder and other supported parts have been locked during the operation of uniting the parts of the supporting structure.

The side frame 10 is formed with a laterally projecting bearing lug 15, which projects su'fliciently to bring its bearing opening opposite the valve rod 5 when said rod is in the /Vithin this bearing is mounted the stub shaft 16 of a bracket 17 which is rigidly connected with the gear link 18, and by this arrangement the stub shaft 16 forms the pivot for the link and brings the pivot point of the link centrally-of its slot The link 18 is designed to form a variable attaching means for the outer end of the valve rod 5 which is formed with a forked head 19 so as to straddle a portion of the link and be provided with a friction roller 20 which is held between the arms of the forked head on the pin 21, and which is designed to travel back and forth within the link slot 22 and have bearing on each side thereof. v

To the end of the gear link 18 is pivoted a rod 23 by means of which the link is adjusted to and held at various inclinations to vary the throw of the valve movement, and also the position of the valve rod to cause a rever- 'this view 26 indicates a rock-shaft mounted on the cross-frame 14 of the supporting structure and lengthwise of the I cross frame, which shaft is operated by the lever 24. At that end of the rockshaft which is opposite the rod 23 there is formed rigidly with said shaft a laterally extending arm or lever 27 which pivotally connects at its outer end. with saidl rod., and at the other end of the rock shaft there is provided a similar arm or lever28 which extends in the opposite direction and pivotally connects with the rod 23 of the valve gear for controlling the exhaust ports.

In order to accommodate the valve gear for the exhaust chest it will be observed that the bearing lug 15a for supporting the gear link 18a, is formed on the side frame 11, and on the side of the supporting structure, opposite to that on which the bearing lug 15 is located, and also extendsin a direction opposite to that of said lug 15.

It will be understood that with the link 1S and 18a in the position shown in Figs. l and 2 any movement of the valve rods 5 and. 6 on their respective links, by reason of being at right angles to the direction of the valve throw, will not effect the valve throw sufIiciently to open the steam ports, andfthis position of the link is brought about when it is desired to cut off the steam. By adjusting the links at an inclination, as shown in Fig. 6, the travel of the valve rods back and forth on their links, the travel being from a lower to a higher elevation, is suchvas to increase the throw of the valve rods and open the steam ports, the degree in which the ports are open le )ending solely upon the inclination of the 1n is.

The reversal of the engine is accomplished by adjusting the links to an inclination opposite to that at which they had been previously adjusted, the reverse position being shown by dotted lines in Fig. 6.

The supporting structure oit the engine is also provided with a lug 29 cast on opposite sides thereof near its base and by means of which the engine may be bolted securely to and firmly sustained on any base structure designed to carry it.

I'Iaving thus fully described the invention, what I claim as new, is:

' l. In an oscillating engine, the combination with the cylinder, of a'steam chest, an exhaust chest, valves for controlling the steam ports of said chests, a valve rod for each chest, a pivotedfvalve gear for each rod having a sliding connection with its said rod and adapted to be adjusted to different ixed positions, and means for simultaneously adjusting said valve gears.

2. In an oscillating engine, the combination with the cylinder, of a steam chest, an exhaust chest, valves for controlling the steam ports of said chest, a valve rod for each chest, a pivoted valve gear for each rod and having a sliding connection therewith, an adjusting rod -for each gear, a rock-shaft having oppositely extending arms each connecting with its respective adjusting rods, and means for operating said rockshaftv 3. In an oscillating engine, the combination with engine cylinder, its steam inlet chest and exhaust chest, arranged respectively on opposite sides thereof, valves and valve rods for said chest and their controlling gears, of a vertical supporting frame having a valve gear support extending from each of the side frames thereof, on opposite sides of the supporting frame and 'projecting in opposite directions, substantially as and for the purpose set forth.

In testimony whereof I afl'lx my signature, in presence of two subscribing witnesses.

JESSE SMITH.

Witnesses z JACOB GUEPP, C. H. DART. 

